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Studies for the Low Emittance MAX-IV Storage Rings

Tarawneh, Hamed LU (2006)
Abstract
This thesis discusses the feasibility of a low emittance lattice proposed for the MAX-IV storage rings. The MAX-IV facility will have two storage rings that are identical but operated at two different energies, 1.5 GeV for soft X-ray and 3 GeV for hard X-ray production.



The lattice is built to take advantage of the small gap insertion devices that imply small apertures in the magnet elements which allow for the introduction of strong multipole magnets. The compactness of the lattice will thus result in a small emittance which is essential to achieve a high brilliance and small betatron functions, giving a good admittance-aperture relation.



An extensive investigation of the dynamic properties of the... (More)
This thesis discusses the feasibility of a low emittance lattice proposed for the MAX-IV storage rings. The MAX-IV facility will have two storage rings that are identical but operated at two different energies, 1.5 GeV for soft X-ray and 3 GeV for hard X-ray production.



The lattice is built to take advantage of the small gap insertion devices that imply small apertures in the magnet elements which allow for the introduction of strong multipole magnets. The compactness of the lattice will thus result in a small emittance which is essential to achieve a high brilliance and small betatron functions, giving a good admittance-aperture relation.



An extensive investigation of the dynamic properties of the lattice has shown a satisfactory performance in terms of dynamic aperture and electron beam lifetime.



The magnet system of the MAX-IV storage rings will be made of solid iron as in the MAX-III ring. A prototype dipole magnet has been designed and fabricated to investigate the feasibility of such a highly integrated magnet. The magnetic field measurements of the prototype magnet have shown a good agreement with the model magnet in terms of the field quality.



The 100 MHz radio frequency system is a strong candidate for the MAX-IV rings to achieve a decent lifetime with long bunches. This system was recently installed in the MAX-II ring to increase the energy acceptance, thus minimizing the Touschek losses and increasing the RF power needed to engage two superconducting wigglers magnets at 250 mA beam current in the ring. As a consequence, there was a need to characterize the MAX-II ring in order to investigate the achieved bunch length and the influence of the introduction of the two wigglers on the transverse beam sizes and the optical functions and hence the achieved equilibrium emittance. (Less)
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author
supervisor
opponent
  • Dr. Rivkin, Leonid, Paul Scherrer Institute, Villigen, Switzerland
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Fysik, Physics, Touschek losses, energy acceptance, dynamic aperture, Lattice, emittance
pages
105 pages
publisher
MAX-lab, Lund University
defense location
Sal B, Physics Institute, Sölvegatan 14, Lund, Sweden.
defense date
2006-02-03 13:15
external identifiers
  • Other:ISRN: LUNTDX/NTMX-1006-SE
ISBN
91-628-6687-7
language
English
LU publication?
yes
id
cb6498c2-2c58-406e-a44b-d5948896416a (old id 546036)
date added to LUP
2007-10-13 11:34:59
date last changed
2016-09-19 08:45:13
@misc{cb6498c2-2c58-406e-a44b-d5948896416a,
  abstract     = {This thesis discusses the feasibility of a low emittance lattice proposed for the MAX-IV storage rings. The MAX-IV facility will have two storage rings that are identical but operated at two different energies, 1.5 GeV for soft X-ray and 3 GeV for hard X-ray production.<br/><br>
<br/><br>
The lattice is built to take advantage of the small gap insertion devices that imply small apertures in the magnet elements which allow for the introduction of strong multipole magnets. The compactness of the lattice will thus result in a small emittance which is essential to achieve a high brilliance and small betatron functions, giving a good admittance-aperture relation.<br/><br>
<br/><br>
An extensive investigation of the dynamic properties of the lattice has shown a satisfactory performance in terms of dynamic aperture and electron beam lifetime.<br/><br>
<br/><br>
The magnet system of the MAX-IV storage rings will be made of solid iron as in the MAX-III ring. A prototype dipole magnet has been designed and fabricated to investigate the feasibility of such a highly integrated magnet. The magnetic field measurements of the prototype magnet have shown a good agreement with the model magnet in terms of the field quality.<br/><br>
<br/><br>
The 100 MHz radio frequency system is a strong candidate for the MAX-IV rings to achieve a decent lifetime with long bunches. This system was recently installed in the MAX-II ring to increase the energy acceptance, thus minimizing the Touschek losses and increasing the RF power needed to engage two superconducting wigglers magnets at 250 mA beam current in the ring. As a consequence, there was a need to characterize the MAX-II ring in order to investigate the achieved bunch length and the influence of the introduction of the two wigglers on the transverse beam sizes and the optical functions and hence the achieved equilibrium emittance.},
  author       = {Tarawneh, Hamed},
  isbn         = {91-628-6687-7},
  keyword      = {Fysik,Physics,Touschek losses,energy acceptance,dynamic aperture,Lattice,emittance},
  language     = {eng},
  pages        = {105},
  publisher    = {ARRAY(0x11bb5c00)},
  title        = {Studies for the Low Emittance MAX-IV Storage Rings},
  year         = {2006},
}